var reviewsvisible=0;
function toggle_reviews()
{
	if(reviewsvisible==0)
	{
		smoothHeight('personalise_reviews',0,72,5, 'o')
		reviewsvisible=1;
	} else
	{
		smoothHeight('personalise_reviews',72,0,5, 'o')
		reviewsvisible=0;
	}
}


function display_reviews()
{

	ajax.open("GET", '/ajax/reviews.frontpage.php?reviews=' + reviews, true);
	ajax.onreadystatechange = reviews_updateresponse;
	ajax.send(null);
}

function reviews_updateresponse()
{
	 if (ajax.readyState == 4)
	 {
	 	document.getElementById('reviews').innerHTML=ajax.responseText;	
	 	reviews=document.getElementById('reviews_new').value; 	
	 }
}

function more_reviews()
{
	reviews++;
	if(reviews>6) reviews=6;
	setCookie('reviews',reviews,90)
	display_reviews();
}

function less_reviews()
{
	reviews--;
	if(reviews<0) reviews=0;
	setCookie('reviews',reviews,90)
	display_reviews();
}

function save_reviews()
{
	smoothHeight('personalise_reviews',72,0,5, 'o')
	reviewsvisible=0;
	
	for(var x=0; x<channels.length; x++)
	{		
		if(document.getElementById('reviews_channel_' + channels[x]).checked)
		{
			setCookie('reviews_channel_' + channels[x],'yes',90)
		} else
		{
			setCookie('reviews_channel_' + channels[x],'',90)
		}
	}
	
	display_reviews();
}

function popup_reviews(id)
{
	popup_startupdate('/ajax/popup_reviews.php?id=' +id);
	setVisible('popup');
}